Carpet-sweeper attachment



H. FRANKENSTEIN.

CARPET SWEEPER ATTACHMENT.

APPLICATION FILED JAN. 30. I919.

1,420,830. Patented June 27, 1922 ,0; Vic/i 4 *"Y I IIIW I I III I III II II L w z? 3/ .7/ Z4 0 /.3/ J0 g J0 J0 o Z5 ATTORNEY .f/ "Q4 BY HENRY FRANKENSTEIN, or NEWYORK, N. Y.

oanrnr-swnnrnn ATTACHMENT.

Specification of Letters Patent. Pgtentgd June 27, 1922,

Application filed January 30, 1919. Serial No. 273,966.

To all whom z'tmay concern:

Be it known that I, HENRY FRANKEN- s'rnrN, citizen of the United States of America, and a resident of New York, county and State of New York, have invented certain new and useful Improvements in Carpet-Sweeper Attachments, of which the followingis a specification, reference being had to the accompanying drawings, forming a part thereof.

My invention relates to new and useful improvements in attachments for carpet sweepers and its object is to provide a simple device for cleaning the brushes of carpet sweepers which may be quickly and easily affixed to carpet sweepers of well known forms of construction.

Another object is to provide a device of this character which will cut lint and otherv foreign matter which adheres to the bristles of the brush as wellas remove such material from the brush. I

Another object is to so design and construct the attachment that itmay be used with equal effectiveness during the rotation of the sweeper brush in either direction.

Another object is to so arrange and construct the blades of the device that they will be sharpened by their contact with the brush.

In order that'my'invention may be thoroughly understood I will now proceed to describe the same in the followingspecification, and will then point out the novel features thereof in appended claims.

Referring to the drawings:

Figure l is a central longitudinal sectional elevation of a carpet sweeper with a cleaning attachment affixed thereto which is made according to and embodies my invention.

Figure 2 is a central transverse sectional elevation of the same parts.

Figure 3 is an inverted view of a part of the casing of the carpet sweeper, with one of my attachments affixed thereto.

Figure 4: is a perspective view of one of the spacing blocks used in the construction of this attachment.

Figure 5 is a perspective view of one of the blades of this device, and

Figure 6 is a perspective view of one of the clamps used for affixing the cleaning device to the casing of a carpet sweeper.

Like characters of reference designate corresponding parts in all the figures.

10 designates generally a carpet sweeper of well known form and construction, of

which 11 is a cylindrical brush adapted in tic use of the sweeper to be rotated in opposite directions. 12 is the upper side of the carpet sweeper.

The attachment itself comprises a pl'uraL ity of blades 20 which arelmade. in the form of isosceles triangles, and-provided with perforations 21. Between them are semicylindrical spacing blocks 22, provided with perforations 28. The bases of these blades and spacing blocks are of equal width. These .are assembledside by side, with a rod 24; placed through the perforations therein. The rod is threaded at its ends and nuts 25 thereon serve to hold the parts together with the bases of the blades and the spacing blocks in a common plane. hen thus constructed the device is ready to be applied to acarpet sweeper.

30 designates a clamp having a semicylindrical portion of the same radius as that of the spacing blocks and having outturned'flanges 31 which are perforated as shown for thereception of screws. These clamps are also provided with slots 32 of sufficient width to permit the insertion of one of the blades of the device through each clamp.

This device isarranged to be affixed to the side 12 of'the casing of a carpet sweeper in the position shown in the drawings, that is, with the rod 24 parallel with the axis of the brush 11 and with the bases of the blades and spacing locks normal to a plane passing through the center of the brush and of the rod 24. hen thus positioned the blades will be symmetrical in relation to the brush so that their effect upon the brush will be the same for both directions of its rotation. I

In'use the blades not only cut the lint and other fibres which adhere to the brush, but comb all such foreign matter out of the brush, thus leaving the brush in better condition for performing its function and as a matter of fact actually prolonging the life of the brush.

- The rubbing of the bristles of the brush I against the blades keeps the edges of the blades sharp so that their effectiveness is blocks between the blades, a rod passingthrough the blades and blocks, means near the ends of the rod for clamping said parts together .and means for affixing the assembled blades and blocks to the casing of a sweeper with the blades in positions symmetrical in relation to a plane passing through the axis of the brush of the sweeper and the bases of the blades and projecting through the periphery of the brush.

2. An attachment for carpet sweepers comprising a plurality of triangular blades, semi-circular spacing blocks between the blades, a rod passing through the blades and blocks, means near the ends of the rod for clamping said parts together with the bases of the blades and of the blocks in a common plane and with the apexes of the blades extending beyond the curved surfaces of the blocks, and means for aflixing the assembled blades and blocks to the casing of a sweeper with the blades in positions symmetrical in relation to a plane passing through the axis of the brush of the sweeper and the bases of the blades and projecting through the periphery of the brush.

8. An attachment for carpet sweepers comprising a plurality of triangular blades, semi-circular spacing blocks between the blades, a rod passing through the blades and blocks, means near the-ends of the rod for clamping said parts together with the bases of the blades and of the blocks in a common plane and with the apexes of the blades extending beyond the curved surfaces of the blocks and clamps adapted to fit over the blocks and having outwardly extending flanges provided with perforations by means of which the assembled blades and blocks may be affixed to the casing of a sweeper with the blades in positions symmetrical in relation to a plane passing through the axis of the brush of the sweeper and the bases of the blades and with the extending parts of the blades projecting through the periphcry of the brush.

4L. An attachment for carpet sweepers comprising a plurality of triangular blades, semi-circular spacing blocks between the blades, a rod passing through the blades and blocks, means near the ends of the rod for clamping said parts together with the bases of the blades and of the blocks in a common plane and with the apexes of the blades extending beyond the curvedsurfaces of the blocks, and clamps adapted to fit over the blocks and having outwardly extending flanges provided with perforations by means of which the assembled blades and blocks may be affixed to the casing of a sweeper with the blades in positions symmetrical in relation to a plane passing through the axis of the brush of the sweeper and the bases of the blades and with the extending parts of the blades projecting through the periphery of the brush, each of said clamps being constructed. with a slot through which one of said blades may be placed.

5. A carpet sweeper comprising a rotary cylindrical brush, a casing having a side parallel with the axis of the brush, a brush cleaner affixed to said side of the casing, said cleaner comprising a plurality of triangular blades, spacing blocks between the blades, a rod passing through the blades and blocks, means near the ends of the rod for clamping said parts together, said blades being in positions symmetrical in relation to a plane passing through the axis of the brush of the sweeper through the apexes and through the center of the bases of the blades and projecting through the periphery of the brush.

6. A carpet sweeper comprising a re versible rotary cylindrical brush, a casing having a side parallel with the axis of the brush, a brush cleaner aflixed to said side of the casing, said cleaner comprising a plurality of triangular blades, blocks between the blades, a rod passing through the blades and blocks, and means near the ends of the rod for clamping said parts together with the bases of the blades and of the blocks in the plane of said side of the casing, clamps over some of the blocks, said clamps having outwardly extending flanges provided with perforations and fastening devices passing through. the perforations into the casing.

In witness whereof, I have hereunto set my hand this 24 day of Jan, 1919.

HENRY FRANKENSTEIN. 

